linux-kernel - Re: [PATCH v13 2/5] soc: qcom: rpmh: Update dirty flag only when data changes

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Date:   Fri, 13 Mar 2020 14:23:54 +0530
From:   Maulik Shah <mkshah@...eaurora.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Stephen Boyd <swboyd@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Evan Green <evgreen@...omium.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Andy Gross <agross@...nel.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Lina Iyer <ilina@...eaurora.org>, lsrao@...eaurora.org
Subject: Re: [PATCH v13 2/5] soc: qcom: rpmh: Update dirty flag only when data
 changes

Hi,

On 3/10/2020 5:12 AM, Doug Anderson wrote:
> Hi,
>
> On Mon, Mar 9, 2020 at 2:31 AM Maulik Shah <mkshah@...eaurora.org> wrote:
>> Currently rpmh ctrlr dirty flag is set for all cases regardless of data
>> is really changed or not. Add changes to update dirty flag when data is
>> changed to newer values. Update dirty flag everytime when data in batch
>> cache is updated since rpmh_flush() may get invoked from any CPU instead
>> of only last CPU going to low power mode.
>>
>> Also move dirty flag updates to happen from within cache_lock and remove
>> unnecessary INIT_LIST_HEAD() call and a default case from switch.
>>
>> Fixes: 600513dfeef3 ("drivers: qcom: rpmh: cache sleep/wake state requests")
>> Signed-off-by: Maulik Shah <mkshah@...eaurora.org>
>> Reviewed-by: Srinivas Rao L <lsrao@...eaurora.org>
>> Reviewed-by: Evan Green <evgreen@...omium.org>
>> ---
>>  drivers/soc/qcom/rpmh.c | 19 +++++++++++--------
>>  1 file changed, 11 insertions(+), 8 deletions(-)
> Reviewed-by: Douglas Anderson <dianders@...omium.org>

Thanks for the review doug.

Hi bjorn,

can you please pull in first 2 changes in the series.

while the others are still under discussion, pulling in these first 2 will help avoid send them each time.

Thanks,

Maulik

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